Water-tube boiler.



C. WARD.

WATER TUBE BOILER.

APPLICATION FILED JULY 19, 1910. RENEWED D120. 27, 1911. 1,020,234.

Patented Mar. 12, 1912.

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. Specification of Letters Patent.

' Application fled m i'e, 1910, Serial No. 572,884. Renewed December 21, 1911. Serial no. eeaoaa.

To all whom it may Be it known that I, CHARLES WARD, citizen of the United States, residing at Charleston, in the county of Kanawha and 6; State of West Virginia, have invented certain new and useful Im rovements in J Water-Tube Boilers, of whic the following is a specification. 1+5;

Th1s invention relates to, water-tube bilers, and its object is the production of a steam generator having parts of special construction, which parts, together with deices forhncreasing the circulation, are ar-' ranged in a articular manner believed to materially a vance the economy and efliciency of the boiler. p

The construction and arrangement of the various features comprising this invention are illustrated in the accompanying draw- .ings, of which- F Figure 1 represents a vertical and longtudinal section showing all parts assembled. Fig. 2 is an end view of one ofthe closures olfthe-circulatin or'main tube, and a part oss-section of t at tube.

same part" throughout the description and drawin I The 531m A located atthe highest point of'the structure, is. connected with the header -B, that is termed in this description the up 4' headers, and aving usually the same inclination as tubes D, is the main circulatin tube E, having the end closures or heads and G ordinarily of the bell-shaped formation shown. Portions of the main tube E near the closures are rovided with slots 0 o ening into the has ers B and C. The fee water pipe H enters the main circulat-= ing pipe E centrally through the closure F. The shaft J enters the main circulating tube E centrally through the closure "G, by way of the thrust beam 9', and stufiing box K. Within the tube E e shaft J has secured to'it a propeHer wheel L. 1. 1;; I The 0 eration of this inv'en'tion may be describe as follows: The'normal, unaided "circulation takes the through the main tube in icated by the arhe same. letter is used. to refer to the mini i direction.

pipe 'H, usual y with considerable velocity,

also tahes the direction of circulation, and, I grovide within the tube E the cones h an it ln-the path. of the feed water jet.

The resulting action of the feed water jet upon the surroundmg'water is to increase the velocity of its movement in the direction of circulation, after the manner of a jet pump or injector.

It is believed to be now clear that the veloclty of the circulating water may be increased by suitably revolvin the propeller L. The feedwater jet an the propeller both impel the water in tube E in the same diregtion and at the same time when so desire The elevated drum A afi'ords ample space for the separation and retention of the steam.

Havin nowdescribed this invention, and e'xplaine themode of its operation, what I claim is:--

1. In a boiler, the combination wit-h headers, of a main circulating tube passing through the headers and having openings in communication with the headers near the ends of said tube,-a shaft arranged to enter one end of the said main tube, and a wheel secured upon the shaft constructed and arranged to impel the water through the 0 nings said tube at the same end.

2. n a boiler, the combination with headers, of a main circulating tube passing through the headers and having openin near the ends in communication with tfi: headers, a shaft arranged to enter one end of said main tube, and a ropeller wheel upon the shaftarranged to lmpel the water throu h the said main tube.

3. a boiler, the combination with headers, of'a main circulating tube connecting F the headers and having openin near the ends in communication .with t e headers, a-Bhaft arranged to enter one end of said niain tube, a propeller wheel secured to the culating. tube passing through the headers shaft and arranged to impel the water through the said main tube, and a feed water/p pe passingthrough theother end I of said main tube. a I

4. In a boiler, thdegmbmation witlrupper and lower headers, of an inclined main C11- and having openings near,the ends in com- -munication with the headers, a ,shaft arranged to enter. oneend of said main tube, and a: wheel secured upon the shaft constructed and arranged to impel the water through the openings in said main tube at the sameend. i

5. In a boiler, the combination with upper and lower'headers, of an inclined main cir- ,culating tube passing through the headers and having openings near the ends in communication with the headers, a shaft arranged to enter one end of said main tube, and a propeller wheel upon the shaft arranged to impel the water throughthe said main tube.

6. In a boiler, the combination with upper and lower headers,'of an inclined main cir culating tubeconnecting the headers and in communication with the headers, a shaft arheaders, a feed water pipe arranged to en-' ter one-end of the main tube, and cones arranged in the path of the feed water whereby the surrounding, water is actuated in the direction of circulation.

8. In a boiler,the-combination with upper and lower headers, of an inclined main circulating tube connecting the headers and in communication with the headers, a feed water; pipe*-- arranged to enter the higher end of the said mam tube, andmeans located in another portion "of said main tube for increasing the velocity of the water in the tube'in the direction of the entering feed water.

9. -In a boiler, the combination with two headers one arranged higher than the other, of a series of inclined tubes connecting the said headers, afrelativel larger main circulating tube arranged elow the said in-' clined tubes and extending in thesame di-' rection, the said circulating tube connecting the lower parts of the sald headers im- .mediately below the said tubes. and having an inclined-"position, and water-actuating devices located within the said main circu-' lating tube. I

10. In a boiler, the combination with headers, of a maincirculating tube connecting' the headers and in communication with the headers; a feed water pipe arranged to enter one end of the main tube, cones ar-. ranged in the path of the feed water-whereby the surrounding water is actuated in the direction of circulation, and water-ac tuating devices located within said main tube at a distance from the entrance of saidfeed pipe for aiding the circulation.

11. In a boiler, the combination with upper and lower headers, of an inclined, main circulating tube connecting the headers and in communication with the headers, a feed water pipe arranged to enter the higher end of said main tube, andcones arranged in the path'of the feed water whereby the surrounding water is actuated in the direction of circulation.

In testimony whereof I aflix my signature in presence of two witnesses.

, V CHARLES WARD. I

Witnesses: I

' CHARLES EJWARD, J. E. DAVIES. 

